不同超声波频率下熔体处理方法对Al-1.65%Si铸锭除气的影响  

Effects of Melt Treatment Methods on Degassing Efficiency of Ultrasonically Refined Al-1.65%Si ingots Under Different Ultrasonic Frequencies

作　　者：李军文[1] 桃野正[2] 田汤善章[2] 

机构地区：[1]辽宁工学院材料与化学工程学院,辽宁锦州121001 [2]国立室兰工业大学材料物性工学科

出　　处：《矿冶工程》2007年第2期50-53,共4页Mining and Metallurgical Engineering

基　　金：日本文部省国立大学活性化支援经费;辽宁工学院留学归国人员科研启动基金(2005LG001);辽宁省教育厅科研基金(2005L186)

摘　　要：研究了不同超声波频率下熔体处理方法对Al-1.65%Si铸锭除气的影响,如:没有添加除气剂和超声波处理、只添加除气剂不进行超声波处理、铸锭底部强冷情况下既添加除气剂又进行超声波处理的情况。分析了超声波除气的原因。研究结果表明,采用适时的超声波振动处理与铸锭底部强制冷却相结合的方法,可显著地降低铸锭内的含气量,提高铸锭密度。The effects of the melt treatment methods on the degassing efficiency of ultrasonically refined Al-1.65% Si ingots were studied under different ultrasonic frequencies, e g without degasser and ultrasonic, with degasser only, with degasser and ultrasonic under constraint cooling in the bottom of the ingot. The mechanism of ultrasonic degassing was analyzed. The results showed that by using the method of ultrasonic degassing with constraint cooling in the bottom of the ingot, the value of porosity volume （Pv） could be decreased obviously.

关 键 词：熔体处理 超声波 除气 Al—1.65%Si合金 铸锭 

分 类 号：TF111.1[冶金工程—冶金物理化学]